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Toshiba Satellite P25-S5092/ Computer will come on, but screen will not work. Wondering if it is most likely the LCD screen itself, the backlight or something else.

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Hi,

If you have deduced that indeed the Toshiba Satellite P25-S5092 will boot and therefore operational except no display on the screen, you can always verify by connecting an external monitor. You of course would need to press Fn + F? (the F key with the small monitor icon).

As to the LCD screen having no display, often this could either be the CCF lamps (cold cathode florescent) and/or the inverter that powers it. One way to verify this is by shining a flashlight obliquely to the screen and a portion of your desktop would show albeit very very dark. Often, it is the inverter that fails. In some instances it could even just be a cold solder, loose connection or capacitors that have dried up, leaky or blistering.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on May 18, 2008

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a


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info

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what i would try is renewing your ip address, go to command prompt type in "ipconfig /release" wait till it is finished, then type in "ipconfig /renew" and see if that works.

If that doesnt solve it, there are a few more items that would help solve>
What type of router
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Regards

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This ebay page contains the screen you need and instructions on removal and installation for your screen. It also contains the necessary information to make sure you are purchasing the correct screen.

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